Part 171

PUNC´TUM SA´LIENS, n. First trace of the embryonic heart.

PUPIL´LA, n. Central black disc circumscribed by the iris; the pupil (a hole, not a substance).

PUPIL´LARY, a. Pertaining to the pupil.

PYGOP´ODES, n. pl. A group of birds distinguished by the far backward position, and deep burial, in common integument, of the legs.

PYGOP´ODOUS, a. Belonging to Pygopodes, or having the character of that group.

PY´GOSTYLE, n. Last coccygeal vertebra, of peculiar size and shape in recent birds; also called the vomer.

PYLOR´IC, a. Pertaining to the pylorus.

PYLO´RUS, n. Opening from gizzard into duodenum; especially, valve guarding this orifice.

PYR´IFORM, a. Pear-shaped.

QUADRAN´GULAR, a. Four-edged or four-angled.

QUAD´RATE, a. Squared.

QUAD´RATE BONE, n. See OS QUADRATUM. A peculiarly shaped bone interposed between the lower jaw and the rest of the skull.

QUADRILAT´ERAL, a. Four-sided.

QUADRILOC´ULAR, a. Four-chambered, as the heart of higher vertebrates is.

QUAR´RY, n. Prey of raptorial birds.

QUILL, n. See PENNA. (2, 75, 76, 145.)

QUI´NARY, a. Noting a certain absurd system of classification which presumes that there are five types, or sets of objects, in every natural group.

QUIN´CUNX, n. Set of five, arranged thus, ⁙

RA´DIAL, a. Pertaining to the radius.

RA´DII, n. pl. Barbs of a main feather.

RA´DII ACCESSO´RII, n. pl. Barbs of the supplementary feather.

RADIO´LI, n. pl. BARBULES (which see).

RADIO´LI ACCESSO´RII, n. pl. Barbules of the supplementary feather, aftershaft or hypoptilum.

RA´DIUS, n. Outer bone of forearm.

RA´MUS, n.; pl. rami. Branch or fork. Gnathidea.

RAPH´E, n. Line of separation of two parts of an organ when prominent or otherwise distinguished.

RAPTO´RIAL, a. Pertaining to birds of prey.

RATI´TÆ, n. pl. Birds with flat sternum, as ostriches, emus or cassowaries, and the apteryx.